If you look careful at the floor plans, some of those bunk house models bunk size is only 27 inches wide. I'm a grown man, 63 years old, an my shoulder berth is 24 inches wide. I would be horribly uncomfortable in the buck and probably end up on making a pallet on the floor before morning the first time I had to sleep there.
I have heard and read those rear bed slides have a proximity to leak. But with everything RV related, everything is fixable. It's just a matter of how you want to invest your effort to make it happen.
But more important, it has been confirmed over and over on these forums, that with the bed retracted - in position, you absolutely cannot use it. They are absolutely not designed to carry weight when retracted. So, if you plan on using the space for storage when traveling, I would strongly advise against that.
Personally, I'd never own one designed like that. Conventional slides work well. They are also not near as deep. They are double and sometimes triple sealed extracted and retracted. Older campers had problems, yes. But with advances, newer ones are pretty much trouble free. It's possible the bed slide design as improved. Remember also, when retracting the bed slide in, the roof of that slide needs to be free of any derbies, like leaves, twigs, acorns, walnuts and dead bugs, anything that might fall on it. So, you'll need to carry a ladder of some sort so you can reach the top and sweep it off every time you retract. --- this is just something to think about if you've never considered it. It's not bad ... you just need to be aware of it if you are really considering a camper of any type with a slide of any type.
In my opinion, looking at your list of choices, I'd pick the Northern Spirit 2342BH. It has one slide, wide double bunks, the outside stove (which is really nice to have), the master bed walk around, the dinette which can be made into another bed. It's a LOT of camper packed into a small space.
Anyway, those are my thoughts. In the end, the decision is still yours and only you know your own camping style.
